:root {
  --color-background: #0b1015;
  --color-surface: #111822;
  --color-surface-raised: #172230;
  --color-surface-muted: #0f151d;
  --color-text: #f3f7fb;
  --color-text-muted: #a4b1c1;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-strong: rgba(255, 255, 255, 0.16);
  --color-accent: #91d89c;
  --color-accent-strong: #d5f7d3;
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.22);
  --shadow-card: 0 24px 50px rgba(0, 0, 0, 0.16);
  --radius-sm: 0.75rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;
  --content-width: 72rem;
  --font-body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.75rem;
  --font-size-3xl: clamp(2.5rem, 5vw, 5.25rem);
  --line-height-body: 1.7;
  --line-height-heading: 1.08;
  --transition-fast: 180ms ease;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-body);
  background:
    radial-gradient(circle at top, rgba(145, 216, 156, 0.14), transparent 28%),
    radial-gradient(circle at 85% 0%, rgba(255,255,255,0.04), transparent 20%),
    var(--color-background);
  color: var(--color-text);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-accent-strong); }
button, input, textarea { font: inherit; }
main { min-height: 70vh; }

.site-shell {
  width: min(calc(100% - 2rem), var(--content-width));
  margin: 0 auto;
}

.page-main { padding-bottom: var(--space-3xl); }

.content-section {
  padding: var(--space-3xl) 0;
}

.content-section--surface {
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.015));
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.content-section--narrow .site-shell {
  width: min(calc(100% - 2rem), 48rem);
}

.section-heading {
  max-width: 42rem;
  margin-bottom: var(--space-2xl);
}

.section-heading--split {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 28rem);
  gap: var(--space-xl);
  align-items: end;
}

.section-heading--compact {
  margin-bottom: var(--space-lg);
}

.section-heading__eyebrow {
  margin: 0 0 var(--space-xs);
  color: var(--color-accent);
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-heading__title {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: var(--line-height-heading);
  text-wrap: balance;
}

.section-heading__summary,
.rich-text,
.contact-list {
  color: var(--color-text-muted);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: #08110b;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: 1rem;
}

*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.why-site-exists,
.principles-grid {
  display: grid;
  gap: var(--space-lg);
}

.principles-grid {
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.principle-card {
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.02);
  box-shadow: var(--shadow-card);
}

.principle-card h3 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  font-size: 1.2rem;
}

.principle-card p {
  margin: 0;
  color: var(--color-text-muted);
}

.identity-profile {
  display: grid;
  grid-template-columns: minmax(6rem, 7rem) minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: center;
}

.identity-profile--about {
  margin-bottom: var(--space-2xl);
}

.identity-profile__avatar {
  width: 100%;
  border-radius: 1.25rem;
  border: 1px solid var(--color-border-strong);
  box-shadow: var(--shadow-card);
}

.identity-profile__meta {
  min-width: 0;
}

@media (max-width: 52rem) {
  .identity-profile {
    grid-template-columns: 1fr;
    max-width: 20rem;
  }
  .section-heading--split {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}